The Excretory System
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Echinodermata
Annelida
Arthopoda
Cnidaria
Platyhelminthes
Mollusca
Chordata
Nematoda
Porifera
Giant Tube Worm (
Riftia pachyptila)—
Most annelida have a similar excretory system. Food exits the digestive system and is collected in an organ known as the
metanephridia. Waists is collected before it is expelled via the
Nephridipore.
Earthworm (Amynthas)—
Leach (Hirudo medicinalis)—